Geology and Natural History. 169 



gold (and silver) is estimated as but $128,000. The geologist, 

 however, expresses the opinion that with the deep-mining and 

 economic working of refractory ores now being introduced, the 

 future outlook is promising, and the production may be expected 

 to reach what it was in former years. 



6. The Report of the Governor of Arizona to the Secretary of 

 the Interior, for the fiscal year ending June 30th, 1898. — This 

 report, in addition to the discussion of various economic and 

 agricultural subjects of importance especially to the community 

 involved, contains also a detailed account of the distribution of 

 the metallic wealth of the Territory, by W. P. Blake, Territorial 

 Geologist. How varied and extensive the metallic products of 

 Arizona are, is well understood, and this fact gives much interest 

 to this account of the various gold fields, the mines of silver and 

 argentiferous lead, of copper not the least important of the metals, 

 also coal, marble and other mineral products. It is interesting 

 to note that the production of copper in Arizona has been in- 

 creased fourfold since 1883, and for the first six months of 1898, 

 amounted to nearly 20 per cent of the entire production of the 

 United States. 



7. Die naturlichen Pflanzenfamilien, Lieferung 182, 183, 

 Leipzig, 1898. — Professor Engler has carried this important work 

 nearly to completion. The present installments comprise a portion 

 of one of the indexes; a general index is to follow at the close. 

 Certain of the groups of Cryptogams are still in arrears, but they 

 cannot be much longer delayed. The wealth of illustrations, the 

 general treatment of orders, and the skill with which minor ref- 

 erences to distribution and use have been employed, make the 

 whole work a treasury for general and special botanists. Under 

 the conditions of publication, it was impossible to avoid the un- 

 fortunate separation of subjects which should have been united, 

 but these annoyances are now likely to be forgotten by all the 

 patient subscribers. There cannot be one of these subscribers 

 who does not feel that he has obtained far more than the worth 

 of his money in these clearly printed and attractive volumes. 



G. L. G. 



8. The Fishes of North and Middle America. A descriptive 

 catalogue of the species of fish-like vetebrates found in the waters 

 of North America, north of the Isthmus of Panama ; by David- 

 Starr Jordan and Barton Warren Evermann. Part III, pp. 

 i-xxiv, 2183-3136. Washington, 1898 (Smithsonian Institution: 

 Bulletin of the U. S. National Museum, No. 47). — The third part 

 of this exhaustive Memoir on the Fishes of North America, men- 

 tioned on page 79 of the last number, has now appeared. Pages 

 2183 to 2873 are devoted to the description of species, and the 

 remainder of the volume is given to a key to the families of the 

 true fishes or Teleostei, the glossary of technical terms and the 

 index. 



